Answers

Add 18/21 and 54/30

1^st number: 18/21, 2^nd number: 1 24/30

18/21 + 54/30 is 93/35.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 30 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 21 × 10 = 210,
   18/21 = 18 × 10/21 × 10 = 180/210
3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
   54/30 = 54 × 7/30 × 7 = 378/210
4. Add the two like fractions:
   180/210 + 378/210 = 180 + 378/210 = 558/210
5. 558/210 simplified gives 93/35
6. So, 18/21 + 54/30 = 93/35
   In mixed form: 223/35

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